Numerical Recognition System and Ultrasensitive Fluorescence Sensing Platform for Al³⁺ and UO₂²⁺ Based on Ln (III)-Functionalized MOF-808 via Thiodiglycolic Acid Intermediates

Abstract

Continuous accumulation of Al 3+ in the human body and unintended leakage of UO 2 2+ have posed a great threat to human health and the global environment; thus searching an efficient probe for the detection of Al 3+ and UO 2 2+ is of great importance. Herein, we designed and synthesized two hydrolytically stable Eu 3+ -and Tb 3+ -

Pendent carboxylic acid-fuelled high-performance uranium extraction in a hydrogen-bonded framework and prolifically improved water oxidation via post-metalation-actuated composite fabrication

“…14–18 These amazing structural features instigated researchers to check the applicability of MOFs in diverse areas such as fluorescence sensing, adsorption, heterogeneous catalysis, batteries, solar cells and so on. 19–27 Specifically, pore-functionalization in MOFs via immobilizing carboxylic sites can profoundly facilitate their detection and scavenging performances towards targeted analytes. However, they hardly remain as task-specific sites due to the extreme tendency of coordination with metal ions.…”

On-Site Ratiometric Analysis of UO22+ with High Selectivity

“…13,16−19 Among them, lanthanide metal− organic frameworks (Ln-MOFs) with adjustable ordered porous structures for introducing abundant binding sites, as well as large Stokes shifts for avoiding spectral cross-talk, offered invaluable opportunities for constructing fluorescence probes for UO 2 2+ . 13,17−19 However, many photoluminescent probes are intrinsically limited to low reliabilities. For the fluorescnet responses that are originated from the capture of electrons by UO 2 2+ , 20,21 the accurate quantification is highly susceptive to interfering species with similar or higher electrode potentials, such as Hg 2+ and Fe 3+ .…”

“…Thus, it is getting particularly necessary to develop convenient and cost-effective quantification methods for monitoring the released nuclides. − UO 2 2+ is the most soluble and stable toxic uranium species, which has been recognized as an important index of nuclear industry wastewater. , Although mass spectrometry exhibits a high specificity and sensitivity to UO 2 2+ , the complicated analysis process and the heavy instruments make it improbable for rapid evaluation of emergencies in the field. Moreover, the inevitable sample pretreatment prior to instrumental analysis, such as filtration and digestion, also imparts threats on the operators’ health, owing to the possible radioactivity of the samples.…”

Site-Memory-Triggered Reversible Acronym Encryption in a Nitrogen-Rich Pore-Partitioned MOF for Ultrasensitive Monitoring of Roxarsone and Dichloran over Multiple Platform

“…In recent decades, metal–organic frameworks (MOFs) have emerged as a fascinating class of novel porous materials – owing to their large pore-surface area, adjustable pore functionalization, remarkable physicochemical stability as well as means to constitute structure–function synergies. – These important structural features prompted the chemists to introspect the applicability of MOFs in areas as diverse as fluorescence sensing, gas adsorption, heterogeneous catalysis, anticounterfeiting technology, proton conductivity, and so on. – Particularly, different modes of pore-functionalization in MOFs largely facilitate their lumino-detection performances toward targeted analytes. Apart from chemical sensing, acid–base fluoro-switching by MOFs is much anticipated for the development of luminescent ink-based data encryption technologies .…”